Mortar or concrete mixer.



A. M. PETERSON.

MORTAR OR CONCRETE MIXER.

APPLICATION FILED JAN. 8, 1909.

940,552. Patented Nov. 16. 1909 4 SHEETS-SHEBT ,1v

N human Wuu) m 1 A. M. PETERSON.

' MORTAR 0R CONCRETE MIXER.

APPLICATION FILED JAN.8,1909.

940,552. Patented Nov. 16. 1909 4 SHBETS-SHEET 2.

A. M. PETERSON.

MORTAR OR CONCRETE MIXER.

APPLICATION FILED 1mm, 1909.

Patented Nov. 16, 1909.

SHEBT 3.

4 SHEETS an w n For 1% wanes A. M. PETERSON. MORTAR 0R CONCRETE MIXER.

APPLICATION FILED JAILB. 1909.

Patented Nov. 16. 1909.

4 SHEETS-SHEET 4.

. I W H 7M I,

I attack .hNDREW M. PETERSON, OF GOODHUE, MINNESOTA.

MORTAR OR CONCRETE MIXER.

trac ea I Specification of Letters Patent. Patgyflged N 3155 jjficillfifi,

Application filed January 8, 1909. Serial No. 471,265.

My invention relates to machines for mixing mortar concrete, etc. and has for its objects the provision of a machine provided with means for regulating the relative proportions of the sand and cement delivered to the mixing, device. the provision of a mixing drum in which the sand and cement are first thoroughly mixed in their dry state, and

another mixing drum in which the sand and vcement are mixed with water, the latter drum being adjustably mounted so that the consistency of the concrete may be regulated by causing the mixture to pass through the drunr where mixed with water rapidlyv or slowly. The entire machinevismounted on a wheeled truck apd the machine and truck are actuated by a motor mounted on the truck.

My invention will be described in detail hereinafter and illustrated in the accompanying drawings in which Figure 1 is a view in elevation of the front oi? the machine, Fig. 2, a View of the side of the machine on which is mounted the sand and cement feeding apparatus. Fig. 3, a view of the opposite or delivery side of the machine some of the parts bein gomitted, and Fig. a vertical, longitudinal sectional View ot-the two mixing drums some ofthe parts being omitted.

in the drawings similar reference charpacters-indicate corresponding parts in all of the views. 7 v

, 1 indi ates the truck on which is mounted my improved concrete mixer, and 2 any suitable motor for actuating the truck the machine. 1

t3 indicates the main drive shaft journaled on truck 1 add driien by motor 2.

4 indicates an elevator" for sand and 5 'an -clevalor for cement supplied by hoppers 6 and central opening 2.0 by means of 12 thereon so that the relative speed of the two aprons can be regulated as desired.

13 indicates a shaft journaled on truck A and actuated from shaft 3 by means of gene ing ll. 1 i

15 indicates frames supported. by truci: l on which is journaled shaft 16,'and17 dicates chain and sprocket gearing connecting'shafts Band 16 18 indicates chain and sprocket connecting shaft 16 and shaft 9 or 1 a. desired to drive the eleva or aprons 19 indicates a cylindrical drum secured shaft 16 and rotatedthereby. 7 Drum 15'.- is fed with the sand and content through a spout. communicating with elevators i and 5, and are agitated and mixed while still dry means of projections 22 on the inner surface of the drum which are spirally-arranged so as to actuate the mixture toward the oppw site end from the spout- 21, said end being: open and fitted into a. stationary cup-shaped oover 23 secured to upright frame 15 and *havmg a spout 24 dehvermg into the wet mixing drum 25,: Wet mixing drnm 25 is non-rotatableand has its rear end pivotally mounted by means of hinges 26 to arched. [10:12? secured to the t'ucl; 1 while. its trout end is supported on a shaft 28 having gear wheels 29 securedthereto and meshingwith segmental rack bsrs 30 secured to bracket 31 32 indicates a worm wheel secured to shaft 28 an'd'33 a worm shaft iournaled in an annular casing 3d mounted on said worm wheel 32, said casing, being held from rotation on the wheel 32 by means of a rod 35 secured to said casing and to the wet raining drum 25. I

36 indicates a shaft. journalcd in the rear end or drum and on rod 3'7 secured to the front end of the drum and h paddles or blades 38 secured thereto, said paddles lying spirally arranged so as to gradually push the mixed concrete toward the delivery end of the drum the rapidity with which this is accomplished being socured by the inclination of said drum. regulated by the position of shaft adjusted by worm wheel 32 and worm shaft 36 that mosheswith gear wheel securedto shaft 13. said gear wheels being so construct ed that they are always in mesh whatever be the position of di .un 25.

Mg stilling 39 indicates a gear wheel secured to shaft il indicates a wetcr tank mounted on platform 42, supported on truck 1, to supply water to the motor 2, pi e 43 being connected with said tank, whi-e pipe 44 connects pipe 43 and spout 24.

45 indicates a valve in pipe 43 adjacent to tank ll and l6 a valve in pipe 4% adjacent to spout 2e,

4C7 indicates a force pump connected with pipe 43 having its plunger 48 connected with Wl'lGQl 49 secured to. shaft 16 by means of pitmnn 50. It will be understood that the .tank 41 be filled b o'oenin valve 45 either with or Without closing valve 46.

51 indicates a hose connection tapped into pipe is to liush the interior of drum 25 to clean it of concrete, when closing down at the end of the day or other period, to pre vent it from hardening in the drum.

Having thus d ascribed my invention what I claim is- 1. In a mortar or concrete mixer, a nonrotetable drum having one end pivotally supported, segmental racks suitably secured, a shuft journeled on said drum, pinions secured to said shaft and meshing with said racks, and means to rotate said. shaft-to adthe inclination of said drum.

3. In :1 mortar or concrete mixer, a nonroletsble drum having one end pivotally supported, segmental racks suitably secured, a shaft journnlcd on said drum, pinions secured to said shaft and meshing with said segmental racks, e worm wheel secured to the shaft, a casing inclosing said wheel, and a worm. shaft journaled in said casing and meshing with said Worm wheel, said casing being held from rotation on the Worm wheel.

3. A mortar or concrete mixer comprising a rotatable drum, endless belt conveyors for the dry ingredients of the mortar or concrete emptying into said drum, means to vary the relative speed of the belt conveyors to regulate the relative quantities of the dry ingredients, a non-rotatable drum positioned to receive the contents of said rotatable drum and pivotelly secured at the receiving end, segmental racks suitably secured, a shaft journaled on said drum, inions secured to said shaft and meshing with said racks, and means to rotate said shaft to adjust the inc'lination of said drum.

4. A mortar or concrete mixer comprising a rotatable drum having spiral projections on its interior, endless belt conveyers for the dry ingredients of the mortar or concrete emptying into said drum, the driving shafts of said conveyors having oppositely arranged cone Hulleys'secured thereto, a belt geared to sai pulleys, a cap loosely mounted on the delivery end of said rotatable drum and having a spout connected therewith, a non-rotatable drum at the delivery end of said spout, a shaft journcled in said non-rotataole drum and having stirring blades secured thereto, said non-rotatable drum pivotally secured at the delivery end of the spout, a shaft journaled on said non-rotatable drum, segmental racks suitably secured, pinions secured to said shaft and meshing with said segmental racks, a Worm -wlieel secured to the shaft, a casin inclosing said worm Wheel, a worm shaft journaled in said casing and meshing with said. worm wheel, and a water pi for supplying water to said non-rotetnb e drum.

in testimony whereof I hereto aflix my signature in the presence of two witnesses.

ANDREWI M. PETERSON.

-Witnesses: t

FRANK T. OGoRMAn, MAnoUnih'rs KANN. 

